hi cookiesncream. A guy is serious in courting a girl if he gives extra effort in showing his affection for you. You can also try testing his patience and real motive. Other than that, a guy is serious if he is determined to meet your family members.
A guy who is really serious in courting you shows you who he really is. He isn't scared of showing his real personality to you. More importantly, I notice that guys who are serious in courting a girl isn't afraid to meet her family and the people close to her.
I would know if a guy is serious in courting me when he gets me into dates that shows his interests. Basically, if he starts showing me who he really is, without pretenses, then I guess he is serious.
a guy is really sincere in courting you if he wants to get to know you better. he does not rush into things but spends quality time just getting to know aspects of your life.
i think a guy is really serious in courting a girl when he spends a lot of time getting to know the girl, if he plans for a date well and he visits her in their house with the consent of the parents. I feel that a guy is really serious when he asks for the parents' permission in courting the girl.